CN108225754B - Testing device for checking accuracy of pulling and pressing test frame of petroleum downhole tool - Google Patents
Testing device for checking accuracy of pulling and pressing test frame of petroleum downhole tool Download PDFInfo
- Publication number
- CN108225754B CN108225754B CN201711460176.5A CN201711460176A CN108225754B CN 108225754 B CN108225754 B CN 108225754B CN 201711460176 A CN201711460176 A CN 201711460176A CN 108225754 B CN108225754 B CN 108225754B
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- adapter
- load sensor
- type load
- strain type
- strain
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- 238000012360 testing method Methods 0.000 title claims abstract description 29
- 239000003208 petroleum Substances 0.000 title abstract description 10
- 230000003247 decreasing effect Effects 0.000 claims description 4
- 238000012669 compression test Methods 0.000 abstract description 16
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a testing device for checking the precision of a pulling and pressing test frame of a petroleum downhole tool, which comprises a strain type load sensor (1), wherein a strain gauge (2) is arranged in the strain type load sensor (1), the strain gauge (2) is connected with a jack (3) on the strain type load sensor (1), the jack (3) is connected with a plug (4), the plug (4) is connected with a data acquisition device (6) through a wire (5), a display screen (7) is arranged on the data acquisition device (6), and a power wire (8) of the data acquisition device (6) is connected with a power supply (9); the two ends of the strain type load sensor (1) are respectively connected with an adapter joint (10) connected with the pull rod end and an adapter joint (11) connected with the fixed joint end in a threaded manner. The invention has simple structure, convenient disassembly and strong operability, and can improve the equipment precision of testing and adjusting the tension-compression test frame after quick connection according to the checked tension-compression test frame.
Description
Technical Field
The invention relates to a testing device for checking the accuracy of a pull-press test frame of a petroleum downhole tool, and belongs to the technical field of drilling tool testing.
Background
The tension and compression test frame is a main device for detecting the tension and compression performance of tools such as drilling tool jarring tools, salvaging tools, accelerators, shock absorbers and the like in petroleum, geological departments and petroleum machinery manufacturers. The automatic pipe pulling and pressing machine has the remarkable characteristics of complete functions, large pulling and pressing force, wide diameter range of applicable pipe bodies, high automation degree and the like. The experimental data are mainly that the tensile force value or the compressive force value is directly read through an operation interface.
The test data of the existing tension-compression test frame mainly depend on transmitting real-time pressure to an operation interface through a hydraulic pipeline arranged on the tension-compression test frame. Currently, there is no specialized apparatus to check such devices. The method is generally adopted for checking the pressure gauge and the hydraulic sensor regularly, and the checked pressure gauge and the checked sensor only reflect the precision of the pressure gauge and the sensor, and the tested pressure value also needs to consider the factors such as the loss along the pipeline, the conversion value of the pressure value and the like, so that the precision of the whole equipment cannot be completely reflected by the precision of the pressure gauge and the sensor, and therefore, the equipment is initiated and no similar equipment exists in the market.
Disclosure of Invention
The invention aims to provide a testing device for checking the accuracy of a pull-press test frame of a petroleum downhole tool, so as to improve the accuracy of measured data and ensure the reliability of a tested product, thereby overcoming the defects of the prior art.
The technical scheme of the invention is realized as follows:
The invention relates to a testing device for checking the precision of a pull-press test frame of a petroleum downhole tool, which comprises a strain type load sensor, wherein a strain gauge is arranged in the strain type load sensor, the strain gauge is connected with a jack on the strain type load sensor, the jack is connected with a plug, the plug is connected with a data acquisition device through a wire, a display screen is arranged on the data acquisition device, and a power line of the data acquisition device is connected with a power supply; the two ends of the strain type load sensor are respectively connected with the adapter joint connected with the pull rod end and the adapter joint connected with the fixed joint end in a threaded manner.
In the device, the shape of the strain type load sensor is a three-section cylinder with the diameter decreasing or increasing gradually; the large-diameter section of the strain type load sensor is provided with an internal thread; the middle diameter section and the small diameter section of the strain type load sensor are provided with mounting planes; the small diameter section of the strain type load sensor is provided with external threads.
In the device, the switching joint connected with the lifting rod end is in a two-section circular tube shape, the large straight section of the switching joint connected with the lifting rod end is provided with internal threads, and the small straight section of the switching joint connected with the lifting rod end is provided with external threads; the external thread of the adapter connected with the pull rod end is in threaded connection with the internal thread of the strain type load sensor.
In the device, the adapter connected with the fixed adapter end is in a two-section circular tube shape, the large straight section of the adapter connected with the fixed adapter end is provided with internal threads, and the small straight section of the adapter connected with the fixed adapter end is provided with external threads; the internal thread of the adapter connected with the fixed adapter end is in threaded connection with the external thread of the strain type load sensor.
By adopting the technical scheme, compared with the prior art, the invention has the advantages of simple structure, convenient disassembly, strong operability, capability of improving the equipment precision of testing and adjusting the tension-compression test frame after quick connection according to the checked tension-compression test frame, and the like.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
Fig. 2 is a schematic diagram of a connection structure of a strain gauge load sensor and a conversion connector with a fixed connector end connected thereto.
In the figure: 1-strain type load sensor, 2-strain gauge, 3-jack, 4-plug, 5-wire, 6-data acquisition device, 7-display screen, 8-power cord, 9-power, 10-connection pull rod end's adapter, 11-connection fixed connector end's adapter, 12-installation plane.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples, but is not intended to be limiting in any way.
The invention relates to a testing device for checking the accuracy of a pulling and pressing test frame of a petroleum downhole tool, which is shown in figures 1 and 2, and comprises a strain type load sensor 1, wherein a strain gauge 2 is arranged in the strain type load sensor 1, the strain gauge 2 is connected with a jack 3 on the strain type load sensor 1, the jack 3 is connected with a plug 4, the plug 4 is connected with a data acquisition device 6 through a wire 5, a display screen 7 is arranged on the data acquisition device 6, and a power line 8 of the data acquisition device 6 is connected with a power supply 9; the two ends of the strain type load sensor 1 are respectively connected with an adapter 10 connected with the pull rod end and an adapter 11 connected with the fixed joint end in a threaded manner. The strain type load sensor 1 is in a three-section cylinder shape with a decreasing or increasing diameter; the large-diameter section of the strain type load sensor 1 is provided with an internal thread; the middle diameter section and the small diameter section of the strain type load sensor 1 are provided with mounting planes; the small diameter section of the strain load sensor 1 is provided with external threads. The adapter 10 connected with the pull rod end is in a two-section circular tube shape, the large straight section of the adapter 10 connected with the pull rod end is provided with internal threads, and the small straight section of the adapter 10 connected with the pull rod end is provided with external threads; the external thread of the adapter 10 connected with the pull rod end is in threaded connection with the internal thread of the strain load sensor 1. The adapter 11 connected with the fixed adapter end is in a two-section circular tube shape, the large straight section of the adapter 11 connected with the fixed adapter end is provided with internal threads, and the small straight section of the adapter 11 connected with the fixed adapter end is provided with external threads; the internal thread of the adapter 11 connected with the fixed adapter end is in threaded connection with the external thread of the strain load sensor 1.
Examples
The testing device for checking the accuracy of the pulling and pressing test frame of the petroleum downhole tool in the embodiment consists of an adapter 10 connected with a pulling rod end, a strain type load sensor 1, an adapter 11 connected with a fixed adapter end and a data acquisition device 6.
The adapter 10 connected with the pull rod end is a two-section circular tube made of alloy steel, the outer circle of the circular tube has two diameters, the outer circle of the smaller diameter is provided with external threads for connecting with the strain type load sensor 1, and the interior of the adapter 10 connected with the pull rod end is a through hole; the inner wall of the larger diameter of the adapter 10 connected with the pull rod end is provided with an internal thread near the end surface for connecting with a fixed joint on a pull-press test frame, and the internal thread is communicated with an inner hole with a smaller diameter after the thread is terminated. The strain type load sensor 1 is a three-section cylinder with decreasing or increasing diameter which is manufactured by adopting a metal material with better plasticity, the outer circle of the strain type load sensor 1 has three diameters, and the inside of the larger diameter of the outer circle is provided with an internal thread which is used for being connected with the adapter 10 connected with the pull rod end. The symmetrical mounting plane 12 is machined on the middle diameter excircle of the strain type load sensor 1 so as to facilitate the mounting of the strain type load sensor 1 by using a tool, and a jack 3 for connecting with a plug 4 at one end of a wire 5 on the data acquisition device 6 is arranged in the middle between the two symmetrical facets. The smaller diameter part of the strain type load sensor 1 is provided with external threads near the outer part of the end surface for being connected with the adapter 11 connected with the fixed adapter end, and the symmetry surface after the threads are terminated is provided with a mounting plane 12, so that the strain type load sensor 1 can be conveniently mounted by using a tool. The adapter 11 for connecting the fixed joint end is a round tube made of alloy steel, the outer circle of the round tube is provided with two diameters, the inner part of the larger diameter is provided with internal threads for connecting the strain type load sensor 1, the outer part of the smaller diameter is provided with external threads for connecting the fixed joint on the test frame, and the interior of the adapter 11 for connecting the fixed joint end is provided with a through hole. The strain gauge 2 in the strain type load sensor 1 is connected with the plug 4 through the jack 3, the plug 4 is connected with the data acquisition device 6 through the lead 5, the front surface of the data acquisition device 6 is provided with the display screen 7 for displaying test data, and the back surface of the data acquisition device 6 is provided with the wiring terminal connected with the lead 5 and the power line 8.
The invention has simple structure, convenient disassembly and strong operability, and can realize the test and the adjustment of the equipment precision of the tensile and compressive test frames after the rapid connection of the checked tensile and compressive test frames.
The working process and principle of the invention
After the checking device is well connected with the tension-compression test frame, the lead 5, the power line 8 and the like, a power supply is started, a pull rod of the tension-compression test frame is connected with the adapter 10 connected with the pull rod end through an operation rod on the tension-compression test frame, tension or pressure is applied to the pull rod, the tension or pressure borne by the adapter 10 connected with the pull rod end is transmitted to an internal thread inside the diameter of the larger end of the strain-type load sensor 1 through an external thread structure outside the smaller diameter part of the adapter 10 connected with the pull rod end, the strain gauge 2 in the strain-type load sensor 1 is deformed, the size of deformation is tested, the deformation is converted into a pressure or tension value, the jack 3 in the middle part of the strain-type load sensor 1 is connected with the plug 4, and the plug 4 transmits data to the data acquisition device 6 through the lead 5. The invention is used for testing and recording the digital display value displayed on the data acquisition device 6 connected with the strain type load sensor 1 and the digital display value on the operation interface of the tension and compression test frame at the same moment, comparing the two groups of data, calculating the average value of the two groups of numerical values of the tension and compression test frame, determining the correction coefficient, and filling the correction coefficient into the dialogue box of the operation panel of the tension and compression test frame, thereby realizing the purpose of checking the equipment precision on the tension and compression test frame. The invention solves the problem of whole system calibration of the tension-compression test frame well, ensures the accuracy of measurement data and ensures the reliability of the product measured by the tension-compression test frame. The invention has no other structure to replace.
Claims (1)
1. A testing arrangement for checking oil downhole tool draws test stand precision, includes strain type load cell (1), its characterized in that: the strain gauge (2) is arranged in the strain type load sensor (1), the strain gauge (2) is connected with a jack (3) on the strain type load sensor (1), the jack (3) is connected with a plug (4), the plug (4) is connected with a data acquisition device (6) through a lead (5), a display screen (7) is arranged on the data acquisition device (6), and a power line (8) of the data acquisition device (6) is connected with a power supply (9); the two ends of the strain type load sensor (1) are respectively in threaded connection with an adapter joint (10) connected with the pull rod end and an adapter joint (11) connected with the fixed joint end; the strain type load sensor (1) is in a three-section cylindrical shape with a decreasing or increasing diameter; the large-diameter section of the strain type load sensor (1) is provided with an internal thread; the middle diameter section and the small diameter section of the strain type load sensor (1) are provided with mounting planes (12); the small diameter section of the strain type load sensor (1) is provided with external threads; the adapter (10) connected with the pull rod end is in a two-section circular tube shape, the large straight section of the adapter (10) connected with the pull rod end is provided with internal threads, and the small straight section of the adapter (10) connected with the pull rod end is provided with external threads; the external thread of the adapter (10) connected with the pull rod end is in threaded connection with the internal thread of the strain type load sensor (1); the adapter (11) connected with the fixed adapter end is in a two-section circular tube shape, the large straight section of the adapter (11) connected with the fixed adapter end is provided with an internal thread, and the small straight section of the adapter (11) connected with the fixed adapter end is provided with an external thread; the internal thread of the adapter (11) connected with the fixed joint end is in threaded connection with the external thread of the strain type load sensor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711460176.5A CN108225754B (en) | 2017-12-28 | 2017-12-28 | Testing device for checking accuracy of pulling and pressing test frame of petroleum downhole tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711460176.5A CN108225754B (en) | 2017-12-28 | 2017-12-28 | Testing device for checking accuracy of pulling and pressing test frame of petroleum downhole tool |
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| Publication Number | Publication Date |
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| CN108225754A CN108225754A (en) | 2018-06-29 |
| CN108225754B true CN108225754B (en) | 2024-04-26 |
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| CN201711460176.5A Active CN108225754B (en) | 2017-12-28 | 2017-12-28 | Testing device for checking accuracy of pulling and pressing test frame of petroleum downhole tool |
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| CN108808226B (en) * | 2018-07-25 | 2024-06-11 | 广东电网有限责任公司 | Mushroom head antenna convenient to replace and assembling method |
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| CN105486604A (en) * | 2015-12-11 | 2016-04-13 | 中国飞机强度研究所 | Calibration conversion device for loading frame of combined loading complete equipment |
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|---|---|---|---|---|
| CN2262238Y (en) * | 1996-07-11 | 1997-09-10 | 鞍山钢铁集团公司 | Variable measuring range force measuring sensor |
| CN2574033Y (en) * | 2002-07-26 | 2003-09-17 | 大庆油田有限责任公司 | Axial tension and pressure tester |
| CN103148982A (en) * | 2013-02-04 | 2013-06-12 | 河南科技大学 | Calibration device of pull-press integrated sensor |
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| CN105486604A (en) * | 2015-12-11 | 2016-04-13 | 中国飞机强度研究所 | Calibration conversion device for loading frame of combined loading complete equipment |
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| CN108225754A (en) | 2018-06-29 |
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